Latest Planemos Stories
Known as a "triple shadow transit," three of Jupiter’s moons will simultaneously cast shadows onto the cloudy planet on Saturday (January 24th, 2014). Get ready!
After a journey of more than eight years, NASA’s New Horizons spacecraft has finally entered the first of several planned approach phases around Pluto, and these will culminate with a historic first-ever flyby of the dwarf planet this summer.
An open letter to the QVC after their on-air debate over whether the moon is a planet or a star.
WASHINGTON, Jan. 15, 2015 /PRNewswire-USNewswire/ -- NASA's New Horizons spacecraft recently began its long-awaited, historic encounter with Pluto.
The scientific community was a-buzz in late 2013, when NASA researchers reported that the Hubble Space Telescope had detected 120-mile high vapor plumes emanating from the south pole of Jupiter’s moon Europa.
Almost immediately after NASA's twin Voyager spacecraft made their brief visits to Saturn in the early 1980s, scientists were hungry for more.
The presence of massive dunes, some over a mile wide and hundreds of yards high, on Saturn’s moon Titan has long puzzled scientists, but the authors of a new study appearing in the current edition of the journal Nature believe they have solved the mystery.
Transaction Enhances Pioneer's Size and Capabilities in the Critical Power Market; Adds Nationwide Network of Field Service Technicians for Onsite Power Systems FORT LEE, N.J., Dec.
The European Space Agency's JUICE (JUpiter ICy moons Explorer) mission has been given the green light to proceed to the next stage of development.
Scientists have produced a new version of what is perhaps NASA's best view of Jupiter's ice-covered moon, Europa.
Planet Pluto -- Pluto is the ninth and smallest planet of our solar system. It was discovered by the astronomer Clyde Tombaugh at the Lowell Observatory in Arizona on February 18, 1930 (although the body was first photographed on March 19, 1915). Tombaugh was searching for a "Planet X" to explain the orbit of Neptune; further analysis, with seven decades more data about Neptune's position, has resolved the perceived anomaly without need for an additional gravitational pull on Neptune....
Uranus -- Uranus is the seventh planet from the sun. It is a gas giant. Physical characteristics Uranus is composed primarily of rock and various ices, with only about 15% hydrogen and a little helium (in contrast to Jupiter and Saturn which are mostly hydrogen). Uranus (and Neptune) are in many ways similar to the cores of Jupiter and Saturn minus the massive liquid metallic hydrogen envelope. It appears that Uranus does not have a rocky core like Jupiter and Saturn but rather...
Saturn's moon Hyperion -- Hyperion is a moon of Saturn discovered by Bond and Lassell in 1848. It is the largest highly irregular (non-spherical) body in the solar system (Proteus is quite a bit larger but is almost spherical). It seems likely that Hyperion is a fragment of a larger body that was broken by a large impact in the distant past. The largest crater on its surface is approximately 120 kilometers in diameter and 10 kilometers deep. Like most of Saturn's moons, Hyperion's low...
Saturn's moon Titan -- Titan is the planet Saturn's largest moon. It is larger than either of the planets Mercury or Pluto and is the second-largest moon in the solar system after Ganymede (it was originally thought to be slightly larger than Ganymede, but recent observations have shown that its thick atmosphere caused overestimation of its diameter). Titan was discovered on March 25, 1655 by the Dutch astronomer Christian Huygens, making it one of the first non-terrestrial moons to be...
Jupiter's Moon Europa -- Europa is a puzzle. The sixth largest moon in our Solar System, Europa confounds and intrigues scientists. Few bodies in the Solar System have attracted as much scientific attention as this moon of Jupiter because of its possible subsurface ocean of water. The more we learn about this icy moon, the more questions we have. Because the nature of science is to ask questions, we cannot resist the mystery of Europa and its potential for possessing an ocean. Early...
- A poem in which the author retracts something said in an earlier poem.